"i have spit at shirlene. i have yelled at shirlene.ve pushed shirlene." >> reporter: there it was in his own hand, evidence she left for you to find? >> yes. >> reporter: and suddenly the sisters truly believed their mom was sending secret clues that almost screamed "open in case of death." attempting to solve the mystery, they found a willing ally in detective cambra. one plan they came up with together? secretly recording a phone call with ken. tammie made the call from the police department. the strategy was for tammie to act friendly, supportive. >> hello. >> ken? >> yeah. >> hey, it's tammie. >> reporter: ken told tammie he was deeply concerned for shirlene. >> i love her. it's not the same without her here. i miss her very much. >> reporter: but ken also said he was suspicious of tammie and her sister. >> the feeling i'm getting is like -- i'm feeling like you're going to plan on ganging up on me. and it sounds like you're going to maybe sue me for manslaughter or something, or murder. >> reporter: still, he spoke with tammie at

. >> reporter: more than shirlene davis' heart raced when the twister hit sunday afternoon. she and her husband edgar kept moving room to room, away from their collapsing roof. what was it like to be on that floor as the roof is falling down? >> well, i went into survivor mode. >> i can't explain. you just... all your nerves and emotions just come to the surface. you just don't know what's going on. >> uh-huh. and then when it was all over, you know, we looked and came outside. speechless. >> reporter: the tornado flattened neighborhoods from louisiana to central georgia. >> you want some help? >> reporter: overnight teams searched by flash light for victims and survivors. seven people were found dead in this trailer park in adel, georgia, including amanda rowe. debra tinsley powell is her sister. >> she had the best smile. she just loved my children so much. >> we need a lot of help here in doherty county. >> briscoe, the county chairman, posted video on facebook of the paradise village mobile home park. four people were killed here. >> it literally looked like god threw ha

. >> reporter: more than shirlene davis' heart raced when the twister hit sunday afternoon. she and her husband edgar kept moving room to room, away from their collapsing roof. what was it like to be on that floor as the roof is falling down? >> well, i went into survivor mode. >> i can't explain. you just -- all your nerves and emotions just come to the surface. you just don't know what's going on. >> uh-huh. and then when it was all o you know, we looked and came outside. speechless. >> reporter: the tornado flattened neighborhoods from louisiana to central georgia. >> you want some help? >> reporter: overnight teams searched by flash light for victims and survivors. seven people were found dead in this trailer park in adel, georgia, including amanda rowe. debra tinsley powell is her sister. >> she had the best smile. she just loved my children so much. >> we need a lot of help here in doherty county. >> briscoe, the county chairman, posted video on facebook of the paradise village mobile home park. four people were killed here. >> it literally looked like god threw half o